Measurements of Characteristic Curves in a Computed Radiographic System (I)

DOI

Bibliographic Information

Other Title
  • コンピューテッドラジオグラフィの特性曲線の測定(I)

Description

We measured the system response of a computed radiographic (CR) system with photostimulable phosphors (imaging plate: IP), as three different types of curves, which are the “digital” characteristic curve relating the output pixel value to the input relative x-ray intensity, the calibration curve relating the output photographic density to the input pixel value, and the “overall” characteristic curve relating the output density to the input relative x-ray intensity. The digital characteristic curves showed a considerably wider dynamic range (102.83) than that of the conventional screen-film system. However, this measured dynamic range was narrower than the nominal dynamic range (103.3) of the CR system. The measured sensitivity of the CR system, on the other hand, agreed with the nominal sensitivity. Calibration curve and overall characteristic curve were linear on the plot within the density range of approximately 0.4 to 2.64. These curves measured in our study are useful for quantitative analysis in a CR system.

Journal

Details 詳細情報について

  • CRID
    1390001205455463168
  • NII Article ID
    130004647690
  • DOI
    10.11318/mii1984.5.52
  • ISSN
    09101543
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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